Originally posted by The SorrowLOL, I didn't claim Gladiator was created to have planetary busting strength. I said he was claimed to be Superman's clone and equal. This is a fact. The writer wanted the fans to see Superman fight Colossus, nothing more.
Thor was created to be stronger than Hulk yet was never shown to be on panel, unless Gladiator actually showed planet destroying strength at that point it was just two strong bricks going at it, so your example falls flat.
Now the fact that Gladiator busted a planet with his fists shows that he was capable of that type of power. It is all canon so it counts towards their history. So again, Gladiator didn't hit Colossus or even anyone after the feat with planetary destroying force.
Continuity is continuity. There is no such thing as pre retcon Gladiator.